/Engine/Source/Developer/AssetTools/Public/IAssetTools.h
Unregisters a class type actions object. It will no longer provide information about or actions for class asset types.
void UnregisterClassTypeActions ( const [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [IClassTypeActions](API\Developer\AssetTools\IClassTypeActions) > & ActionsToRemove )